Samantha Ronson reportedly returned home at 5am last night to find that Lindsay Lohan had been waiting on her stoop for hours. The paparazzi caught Linds crying, demanding to know where Sam had been, and shrieking, "I'm your girlfriend!"

Lindsay had apparently been waiting with an anonymous friend who Sam kicks out saying, "She's on my property, I don't know her, I want her out." The girl leaves and Lindsay follows Sam into the house, slamming the door behind her. Video here: [TMZ]

Kim Kardashian and Reggie Bush have split, reports US. "Nobody cheated," said a source. Didn't they just go to Africa together? [US]

A car Katie Holmes was sitting in on the Australian set of Don't Be Afraid Of The Dark started sparking and burst into flames seconds after she got out due to a problem with the car battery. "Katie was very shaken by the ordeal," said a source. "She took the rest of the day off while special effects staff looked over the faults. Katie has filmed scenes since but it has made her think about her safety on set. She will be shooting the same scene at a later date." [The Daily Mail]

"A source very, very, very, very close to Jon Gosselin" revealed exclusively to RadarOnline.com that Jon is secretly still dating both Hailey Glassman AND Kate Major." Two things: is the source "very, very, very, very close to Jon" Jon Gosselin? Also, if this is how Jon keeps a secret what's his version of a public announcement? Is he going to go door to door introducing us to his new girlfriend? [Radar Online]

A reporter Kate Major used to intern for at Chicago Now says Kate told her she and Jon Gosselin are together but he "can't talk" right now due to his "situation," meaning his pending divorce and contract with TLC. [Chicago Now]

Tony Romo has instructed security to keep Jessica Simpson out of his Dallas home. A sign at the entrance to his gated community reads "RED ALERT!!! TONY ROMO HAS MADE SOME CHANGES TO HIS LIST OF PEOPLE ALLOWED IN....JESSICA IS NO LONGER ON THE LIST AND NOT APPROVED FOR ACCESS." [Us]

Here's some good news: Rihanna's rep says that though she and Chris Brown stayed at the same hotel over the weekend, it was just a coincidence and they're not back together. Maybe she can explain that concept to Robert Pattinson/Kristen Stewart fans too. [MSNBC]

A parole hearing took place today for the man who killed Kelsey Grammer's sister in 1975 in an attempted robbery. Grammer tried to attend the hearing but his flight was delayed, so he wrote a letter saying his sister was "smart and good and decent," and "I can never escape the horror of what happened" to her ... "Please do not release this man from prison." The parole board decided Karen Grammer's murderer will stay in prison for at least another five years. [TMZ]

Kelly Clarkson's new single "Already Gone" has the same backing track as Beyonce's "Halo" and Clarkson says it's all the her music producer's fault. "No one's gonna be sittin' at home, thinking 'Man, Ryan Tedder gave Beyonce and Kelly the same track to write to ... no, they're just gonna be saying I ripped someone off," she said. [TMZ]

The I.R.S has filed a $7,373 tax lien against P.Diddy's Atlanta restaurant Justin's Restaurant. Diddy says it's all a big mistake: the I.R.S. was sending notices to his identically named restaurant in New York that closed a few years ago. [The Detroit News]

Debbie Rowe just showed up at the Beverly Hills office of her former boss Dr. Arnold Klein, supposedly to visit another doctor who works in Klein's office. [TMZ]

Fans at a Jonas Brothers concert this weekend concluded that Joe Jonas broke up with Camilla Belle after he changed the lyrics to a few songs and appeared to cry during the song "Camp Rock." [The Mirror, Perez Hilton]

Now Camilla Belle's rep has confirmed the breakup explaining, "There is no third party involved and they care deeply about each other and will remain friends." [People]

BREAKING: Victoria Beckham went to dinner with her hair in a bun. [The Telegraph]

Sacha Baron Cohen has been threatened by the group of Palestinian terrorists featured in Bruno. A representative for The Martyrs Brigades released a statement saying they are "very upset" and will "respond in a suitable way." [The Telegraph]

Lost creators Carlton Cuse and Damon Lindelof dropped some spoilers about season six at Comic Con, which you can read about here: [N.Y. Magazine]

We're learning more fascinating details about Jennifer Lopez's 40th birthday party on Saturday night. Liza Minnelli, Gayle King, and various Lopez family members were in attendance, and a witness says J.Lo and Marc Anthony "were affectionate with each other and obviously loving the night. Marc's arm was around Jennifer a lot, they'd give each other pecks on the face every now and then. She was clearly pleased with how the night went." [People]

Entertainment Tonight just figured out that Mischa Barton has been released from psychiatric evaluation (even though Us reported it last week.) [Entertainment Tonight]

Joel Madden says he's working on a memoir about his experience with kids, relationship, and moving to L.A., "but I don't want to put a book out there if it's not actually meaningful. I'm not going to go there unless I can deliver." [People]

Robert Downey Jr. will star opposite Zach Galifianakis in Due Date, a comedy about an expectant father (Downey) trying to get to the birth of his first child. Director Todd Philips of The Hangover describes it as "a buddy comedy without the buddies." [Yahoo]

Robert Downey Jr. said he thinks he and Jude Law have a special chemistry in Sherlock Homes, joking, "It's called circumstantial homosexuality." He added that even in real life, "We just became really close really quickly, because we just rolled up our sleeves and started working from jump." [People]

Tobey Maguire wrote a letter to Speaker Nancy Pelosi and Senator Tom Harkin saying, "As a parent, I am contacting you because I am deeply concerned that unhealthy school lunches are contributing to our nation's childhood obesity epidemic. My wife and I just had our second child, so this issue is tremendously important to us…Let me ask you please to ensure the Child Nutrition Act provides more fruits, vegetables, and healthy vegetarian foods. Young people deserve healthful food, and I can't imagine a better investment in the future of our country." [Politico]

"I haven't chosen any other action films since Kill Bill because I felt that everything else just sort of paled by comparison. I don't like to get lulled into some hole that I can't get out of." — Uma Thurman [The Daily Express]

Megan Fox says she's too afraid to watch horror movies, but she enjoyed starring in Jennifer's Body because, "For me to be able to play something that I would normally be frightened by was really intriguing and interesting... It's cool to see myself being able to scare people because I'm just a little girl." [People]